Solid solutions of Ba-2(In1-xAlx)(2)O-5: Structural evolution and hydration processes / Spesivtseva I. V.,Kochetova N. A.,Gorbunova E. M.,Animitsa I. E. // RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A. - 2011. - V. 85, l. 10. - P. 1689-1694.

ISSN/EISSN:

0036-0244 / нет данных

Type:

Article

Abstract:

Solid solutions of the composition Ba-2(In1 - x Al (x) )(2)O-5{[}VO](1) (0 a parts per thousand currency sign x a parts per thousand currency sign 0.20) with an incomplete oxygen sublattice were obtained. It was established that, along with an increase in parameter x, there is disordering of oxygen vacant positions and a transition from the structure of brownmillerite to that of defect perovskite. It was demonstrated that the phases under study are characterized by an ability for reversible interaction with water vapors in the temperature range 150-450A degrees C. During this process, proton defects, predominantly in the form of OH- groups, are formed in the oxide structure. We conclude that in a number of solid solutions, the amount of intercalated water declines upon an increase in the aluminum content.

Author keywords:

brownmillerite; perovskite; isovalent doping; structural oxygen vacancies; proton defects; thermogravimetry; IR spectroscopy SUBSTITUTED BA2IN2O5; CONDUCTIVITY

DOI:

10.1134/S003602441110027X

Web of Science ID:

ISI:000294360200002

Соавторы в МНС:

Другие поля

Поле	Значение
Month	OCT
Publisher	MAIK NAUKA/INTERPERIODICA/SPRINGER
Address	233 SPRING ST, NEW YORK, NY 10013-1578 USA
Language	English
Keywords-Plus	SUBSTITUTED BA2IN2O5; CONDUCTIVITY
Research-Areas	Chemistry
Web-of-Science-Categories	Chemistry, Physical
Author-Email	Nadezhda.Kochetova@usu.ru
Funding-Acknowledgement	Russian Foundation for Basic Research {[}10-03-01149\_a]; RF Ministry of Science and Education
Funding-Text	This work was supported by the Russian Foundation for Basic Research, project no. 10-03-01149\_a; and by the RF Ministry of Science and Education, under the program Scientists and Science Teachers for an Innovative Russia.
Number-of-Cited-References	14
Usage-Count-Last-180-days	1
Usage-Count-Since-2013	6
Journal-ISO	Russ. J. Phys. Chem. A
Doc-Delivery-Number	813IN